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The effect of two salinity concentrations (35 and 40 ‰) on the daily feeding and burrowing activities of the sea cucumber, Holothuria parva was investigated, using the nutritional parameters (intestinal  indices, organic materials, and the absorption efficiency). Although no significant difference between the initial and final sections of the intestinal gut of sea cucumbers in two saline conditions was found, the maximum level of intestinal indices, organic material and absorption efficiency was associated with the 40‰ salinity. The survey results displayed that sea cucumber had better feeding activity in 40‰ than 35‰ salinity.